diff --git a/isNumberPalindrome.js b/isNumberPalindrome.js
index 699a785..460bd67 100644
--- a/isNumberPalindrome.js
+++ b/isNumberPalindrome.js
@@ -32,3 +32,18 @@ const isNumberPalindrome = (number) => {
   return reversed === number;
 }
  */
+ 
+const isNumberPalindrome = (number) => {
+  let reversed = '';
+  let digit;
+  
+  let copyOfNum = number;
+  while(copyOfNum > 0) {
+    digit = (copyOfNum % 10);
+    // reversed += (reversed * 10) + digit;
+    reversed += digit;
+    copyOfNum = Math.floor(copyOfNum / 10);
+  }
+
+  return Number(reversed) === number;
+};
diff --git a/longestCommonPrefix.js b/longestCommonPrefix.js
index 99bd9f6..621a510 100644
--- a/longestCommonPrefix.js
+++ b/longestCommonPrefix.js
@@ -39,3 +39,30 @@ const longestCommonPrefix = arrayOfStrings => {
         is empty)
  };
 */
+
+const getPrefixFromWord = (arrWord, word) => {
+  for (let i = arrWord.length - 1; i !== -1; i--) {
+    let prefix = arrWord.slice(0, i + 1);
+    
+    if (word.indexOf(prefix) > -1) {
+      return prefix;
+    }
+  }
+  
+  return '';
+};
+
+const longestCommonPrefix = (arrayOfStrings, word) => {
+  let longestPrefix = '';
+  
+  for (let i = 0; i < arrayOfStrings.length; i++) {
+    let arrWord = arrayOfStrings[i];
+    let prefix = getPrefixFromWord(arrWord, word);
+    
+    if (prefix.length > longestPrefix.length) {
+      longestPrefix = prefix;
+    }
+  }
+  
+  return longestPrefix;
+};
\ No newline at end of file